Fuse-holder.



B. D. BURTON.

FUSE HOLDER.

APPLICATION FILED AUG. 29, 1904.

901,448, Patented 0ct.20, 1908.

l y citizen of the United Joint between the two p UNITED STATES PATENT ornron BRYSON DEXTER HORTON, OF DETROIT, MICHIGAN, ASSIGNOR TO HORTN-MASSNICK CO.,

` OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

FUSE -HOLDER.

No. eo'1,44s.` specification of Letters Patent.

Patented oct. 2o, 190s. Application sied August 2s, 1904. serial Nt. 222,565.

provided with slots e and e to permit them to be strung upon the fuse wire D. The plates E and E" are secured u on the reduced portion d of the fuse strip).

e2 denotesa wire which is connected at one of I] end to the plate E and at its other end to the interior ofthe casing A. he wire e2 is taut between the late E and the casing A.

Idenotes anot To all whom it may concern.' I Be it known that I, BRYsoN D. HORTON, States, residing at Detroit, in the county of YVayne and State of Michigan, have inventedl certain new and useful Improvements in Fuse-Holders, which the following is a specification.

This invention relates to an improvement in fuse' holders and the object ofthe invention is the provision of an indicator, visible from the exterior of the holder, which will at all times indicate the condition of the fuse. A further object-of the invention is the provision of a novel method of securing the fuse to the metallic terminals of the holder.

In the drawings wherein a preferable embodiment of my invention. is shown, and wherein like numerals of referencek refer to similar parts in the several views, Figure 1 is a longitudinal section of a fuse holder havin my improved indicator attached thereto; Fig. 2 is a transverse section of the same; Fig. 3 is'a detail view showing the method of securing the fuse strip to the terminals; Fig. 4 is a transverse section' of a modified form of Axmy 1nvent1on; and Figs, 5 6

a Hat spring F secured 1119051 ff-'he exterior thereof. v The normal tendency of the spring is to stand away from the outside of the casing, but the wire e3 is of such alength that when it is secured to the free end of the spring F, said sprin will be caused to lie flat upon the exterior o the casing A. The wire e3 is preferably secured to a disk f of some suitable material insulated from the end of the spring F which willinsulate the indicator spring from the circuit. Y bove described construction it will be seen that as long as the fuse D is in its normal condition, the spring F will v'lie fiat against the outside ofthe casing,

Referring now more particularly to the drawings A indicates the casing of the fuse holder, B the end ca s therefor, C the metallic terminals secured to said caps and rojecting within the casing,"and D the use strip which is secured to the inner rejecting ends of the terminals C, andvwhich as a central reduced portion d to define the point at which the same will burn out. The terminals C have their ends stamped out to form the hollow seats c position away from the exterior portion of the easing, thereby indicating that the fuse has burned out. e function of the plate E and the wire e2 is to hold the fuse in a central. position in the casing A against the tension o the spring F. I/Vithout this wire the tension of the spring F might be spring to `move away from e fuse was not burned out. In the form illustrated in Fig. 4, the casing A is provided with a chamber a2 in the side thereof in which' slides a piston G, which is Y provided on its upper side with a stem g. A agalnst which the ends ofthe fuse abut.l coil spring H is interposed between the lower side of the piston. G and the bottom of the casing, the tendency of which is to raise the pist-on so that the stem g thereof Will project eyond the sides of the easing, and the position of this piston will indicate the rupture of the f however normally confined within the chamber a2, against the tension of the spring H, by the wire e3 which has itsend secured to the piston G and theplate E-secured on the fuse strip D. The

the strip, thereby-forming a E and E indicate two plates "of micafor other suitable insulating material, which are y strip D will strip It and wire c2 are the same in this form as in the iorm described in Fig. l.

In Fig. I have shown a single Wire e4 which is secured at one end to the inner side of the casing A and is then wrapped around the fuse strip D several times to properly position the same in the casing and then has its free end passed through the aperture a in the casing and secured to the free end of the spring F secured upon the exterior thereof. In this form when the fuse burns out the tension of the spring will cause the portion of the wire e4 wrapped around the fuse strip D te cut through the melted portion thereof and unwind a sufficient amount to permit said spring F to assume a position away from the easing A.

In Fig. 6 I have shown the form of' indicator employed with wire fuses.' In this form the'wire fuse D has its central portion bent in the form of an S. The wire e connects one loop of the S with the casing A and another wire e is connected to the other loop of the S and extends through the aperture e in the casing and is secured to the free end of the spring rF secured upon the exterior surface thereof.

In the form shown in Fig. 7 a 'fusible wire e7 is secured at one end to the inside of the easing A and extends through an aperture d formed in the fuse. strip' D and through an aperture in the casing and has its free end secured t0 the 'free end of a. spring F secured upon the exterior surface ot' the casing, the

wire 07 being of such a length that the spring F will be caused to lie flat against the side of the casing. In this form the fusion of the take place at the point where the opening d is l'ocated, that beingthe portion of the strip of metal, and as the wire e7 extends through the opening'jd it will be fused at the same time as the strip D and the spring F will assume a position awayT from theoutside of the easing, .thereby indicating thatthe fuse has burned out.

In Fig. 8, I have shown a device somewhat similar to that shown in Fig. 5, except that the wire is passed through a hole d2 in the strip and then wrapped around the strip by giving the same one turn after said wire has been passed through. The ends of the -wire are secured as in Fig. 5, the one to the casing and the other to the free end of the spring F.

In Fig. 9, I have shown another form of indicator which may be used with wire fuses. In this form the S bends in the wire extend longitudii'ially instead of transversely and but a single wire es is used instead of two wires as in the 'form shown in` Fig. 5. The wire passed through one of the loops in the fuse wire and has its ends secured respectively te the free end of the spring F and the sideof the easing in advanceof said loop, thereby'fcausingthe wire to assume an anhaving the smallest cross-section lguiar position in the casing. When the fuse burns out the tendency is 'for the wire to straighten out, thereby permitting the spring to assume a position away 'from the casing.

In all the forms which I have described the casing may er maynot be filled with seine 'finely divided nen-conducting material. l f

I do not desirelte limit myself to the pre cise form and construction shown in the drawings as it is obvious that many .minor changes might be made thereto without departing from the spirit of the invention.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is 1- 1. In a fuse holder, a casing, a fuse therein, a s ring secured to the exterior of the casing,

-an a transverse connection between said spring and the fuse serving to hold the spring in contact with the exterior of the casing while the fuse therein is unbroken.

2. The combination with a fuse holder having a fuse therein, of a flat spring secured to the exterior of the holder, and a wire sepured to the free end of the spring and the use.

3. The combination with a fuse holder having a fuse therein, of a Afiat spring secured to the exterior of said holder, said spring being provided with an insulated portion, and a connection between the fuse and the insulated portion of the spring.

4. The combination with having a fuse therein, of a spring actuated indicator secured to the' holder, and a wire provided at one end with a .loo i encircling the Afuse and having its other en secured to the indicator.

5. The combination witha fuse holdei` indicator secured to the hol( er, and a wire provided at material encircling the fuse and having its other end secured to the spring actuated indicator.

6. The combination with'a fuse helder having a fuse therein, of a s ring actuated indicator secured to the hol yhaving a fuse therein, of a s ring actuated and the fuse and a connection between the fuse and the o posite portion efholder.

7. The com mation with a 'fuse .holder having a fuse therein,"of a spring actuated indicator secured to one side of .theholder, a connection between said indicator and the fuse, and a connection between the'fuse and the op osite side of the holder.

8. e combination with a fuse holder having a fuse therein, of a spring actuated indicator secured to the holder, a Wire secured at one end to the indicator and at its other end to the fuse, and a second wire secured at one end to the holder and at its l other end to the fuse. V

the free end of' i Y er on one sidek thereof, a connection between theindieator a fuse holder one end with a plate of insulating the casing 9. The combination with a fuse holder comprising a casing and a fuse secured therein, of a spring actuated indicator securcd to one side of the casing, al wire provided at one end with an insulated plate encircling the fuse and having its other end secured to the indicator, and a connection between the fuse and the opposite side ofthe casing.

10. The combination with a fuse holder comprising a casing and a fuse secured therea spring secured at one end to -the eX- terior of the casing on one side thereof, a connection between the free end ofthe spring and thefuse, and a connection between the fuse and the opposite side of the casing.

11.4 The combinationwith a fuse holder comprising a casing and a fuse secured therein, of a spring secured at one end to the exterior of the casing, a wire provided at one end with an insulated plate secured to the fuse and having its other'end secured to the free end ofthe spring, and a second wire provided at one end with an insulating plate secured to the fuse and having its other end secured to the opposite side of the casing.

12. In a fuse holder, a casing, a fuse therein, having a weakened portion, a movable indicator secured to the exteriorA of thev casing, and, a connection between the indicator and the weakened portion of the fuse.

13. In a fuse holder, a casing, a fuse therein -having' a weakened portion,l a spring actuated indicator secured to the exterior of and a transverse connection between the spring actuated indicator and the weakened portion of the fuse.

14. The combination with a casing or holder lhaving end terminals andan inclosed| fusdhaving its ends attached to the casing terminals of a spring actuated indicator upon the outside of the casing, and a wire that projects through the side of the-casing and has its respective ends attached to the indicator and to an intermediate portion of the fuse. i i

15.' The combinationwith a casing having end terminals and an inclosed fuse interposed between said terminals, o'i a spring-v the casing, an external spring-acting finger attached at Vone end tothe ca'slng, and a connection 'between the opposite end of said linger and fuse wire,l' passingv through said aperture, -for holding sion.

17. The combination with a casing having endternn'nals and afusible strip within the casing and connected to'theend terminals, of a spring-actuated indicator supported exteriorly upon the side of the casing and a wire'having its respective ends so attached to the indicator and to an intermediate point in the fusible strip as to exert a lateralstrain thereon. 18. In a fuse holder, a casing, a fuse therein, a spring secured exteriorly of the casing, and a transverse connection between said spring and the 'fuse servin to hold the spring adjacent the exterior of tie casing while the fuse therein is unbroken.'

said :finger under tenthe middle point of the fuse.

In testimony whereof I'afhx my signature Witnesses:

S. A. Woon,

ALBERT F. Woon. 

